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NACA-TN-1451
An investigation of aircraft heaters XXVII - distribution of heat-transfer rate in the entrance section of a circular tube
Year: 1948
Abstract: Experimental data on the variation of the point unit thermal conductance in the entrance section of a circular tube are presented for 16 different flow conditions of the entering air. Results are compared with values calculated from existing analytical solutions.
The average (integrated mean with length) unit thermal conductance is also calculated for eight entering-air conditions and is compared with values resulting from analytical methods. In many cases the experimental values are appreciably higher than those derived from equations which are based on over-all taken on long pipes.
The average (integrated mean with length) unit thermal conductance is also calculated for eight entering-air conditions and is compared with values resulting from analytical methods. In many cases the experimental values are appreciably higher than those derived from equations which are based on over-all taken on long pipes.
Subject: AIR
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T18:22:39Z | |
| date available | 2017-09-04T18:22:39Z | |
| date copyright | 01/01/1948 | |
| date issued | 1948 | |
| identifier other | AGWSYDAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;jsery=autho162s7D8308/handle/yse/205106 | |
| description abstract | Experimental data on the variation of the point unit thermal conductance in the entrance section of a circular tube are presented for 16 different flow conditions of the entering air. Results are compared with values calculated from existing analytical solutions. The average (integrated mean with length) unit thermal conductance is also calculated for eight entering-air conditions and is compared with values resulting from analytical methods. In many cases the experimental values are appreciably higher than those derived from equations which are based on over-all taken on long pipes. | |
| language | English | |
| title | NACA-TN-1451 | num |
| title | An investigation of aircraft heaters XXVII - distribution of heat-transfer rate in the entrance section of a circular tube | en |
| type | standard | |
| page | 54 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1948 | |
| contenttype | fulltext | |
| subject keywords | AIR | |
| subject keywords | BENDS | |
| subject keywords | BOUNDARY | |
| subject keywords | CIRCULAR | |
| subject keywords | EFFECT | |
| subject keywords | EXCHANGERS | |
| subject keywords | EXHAUST | |
| subject keywords | FLOW | |
| subject keywords | HEAT | |
| subject keywords | HEATERS | |
| subject keywords | LAYER | |
| subject keywords | PIPE | |
| subject keywords | PIPES | |
| subject keywords | SCREENS | |
| subject keywords | TRANSMISSION | |
| subject keywords | TUBES | |
| subject keywords | TURBULENT |